3 years ago

Pls help I’ll give the brainliest and thanks

Mathematics

1 answer:

Lostsunrise [7]3 years ago

6 0

Answer:

I'ts hard to see

Step-by-step explanation:

You might be interested in

Legalize Marijuana, Part II. As discussed in Exercise 6.12, the 2010 General Social Survey reported a sample where about 48% of

kvv77 [185]

Answer:

Around 2397 Americans must be surveyed to get a margin of error of 2%.

Step-by-step explanation:

We are given the following in the question:

Proportion of US residents who thinks marijuana should be made legal = 48%

$\hat{p} = 0.48$

We have to construct a 95% confidence interval.

Margin of error = 2% = 0.02

Formula for margin of error =

$z_{stat}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

$z_{critical}\text{ at}~\alpha_{0.05} = 1.96$

Putting values, we get,

$0.02 = 1.96\times \sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}\\\\0.02 = 1.96\times \sqrt{\dfrac{0.48(1-0.48)}{n}}\\\\\sqrt{n} = 1.96\times \dfrac{\sqrt{0.48(1-0.48)}}{0.02}\\\\\sqrt{n}=48.96\\n = 2397.0816\approx 2397$

Thus, around 2397 Americans must be surveyed to get a margin of error of 2%.

8 0

3 years ago

Write an expression for "the difference of 10 and <br> x.

navik [9.2K]

10-x=d
Im pretty sure !!

7 0

3 years ago

The legs of an isosceles trapezoid have lengths of 48 - 7x and x + 8. What is the length of one of the legs?

sdas [7]

Answer:

13 units

Step-by-step explanation:

The legs of an isosceles trapezoid are congruent, then

x + 8 = 48 - 7x ( add 7x to both sides )

8x + 8 = 48 ( subtract 8 from both sides )

8x = 40 ( divide both sides by 8 )

x = 5

Then

leg = x + 8 = 5 + 8 = 13

4 0

3 years ago

If 40 people buy lemonade while at the food stand, what percent of the people bought lemonade? Illustrate on the number line.

Marina86 [1]

Answer:

Transforms

Step-by-step explanation:

Transforms

6 0

3 years ago

Steven has some money. If he spends $9.00, then he will have 3 5of the amount he started with

docker41 [41]

$1.80 if the question was ( he would have 3/5 of the amount he started with)

7 0

3 years ago